Answer:
Someone who is enthusiastic about tending the garden is said to have this appendage.
My parents are singers, and while my father has red hair I am pale and completely bald.
When your undies attack you.
Arnold Schwarzenegger has a big one, Michael J Fox has a small one, Madonna doesn't have one, The pope has one but he never uses it, Bill Clinton has one and he uses it all the time! What is it?
What are you certain to find inside your pocket when you reach into it?
I am the kind of an ant that's good at math. What am I?